Seiko Cal. 6643 - 578

The 6643-578 is a sought-after Solar piece from Seiko's golden era. Powered by the 6643 caliber with 33j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-989d60f3f19f]

Also known as: Goldfeather

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1981

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